package com.itheima.consumerdemo.controller;

import com.itheima.consumerdemo.pojo.User;
import com.netflix.hystrix.contrib.javanica.annotation.DefaultProperties;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/consumer")
@Slf4j
@DefaultProperties(defaultFallback = "defaultFallback")
public class ConsumerController {
    @Autowired
    private RestTemplate restTemplate;
    @Autowired
    private DiscoveryClient discoveryClient;
    @GetMapping("/{id}")
    @HystrixCommand
        public String queryById(@PathVariable Long id){
            if (id == 1) {
                throw new RuntimeException("太忙了");
            }
//        String url = "http://localhost:9091/user/"+id;
//        //获取eureka中注册的user-service
//        List<ServiceInstance> serviceInstances = discoveryClient.getInstances("user-service");
//        ServiceInstance serviceInstance = serviceInstances.get(0);
//        url = "http://"+serviceInstance.getHost()+";"+serviceInstance.getPort()+"/user/"+id;
        String url = "http://user-service/user"+id;
        return restTemplate.getForObject(url, User.class);
    }
    public String queryByIdFallback(Long id){
        log.error("查询用户信息失败。id：{}", id);
        return "对不起，网络太拥挤了！";
    }

    public String defaultFallback(){
        return "默认提示：对不起，网络太拥挤了！";
    }
}
